\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
{
\begin{tabular}{l*{4}{c}}
\toprule
                &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                &\multicolumn{1}{c}{Own resources}&\multicolumn{1}{c}{People donations}&\multicolumn{1}{c}{Firms donations}&\multicolumn{1}{c}{Others}\\
\midrule
Before          &   -0.101         &   -0.308         &   -0.126         &   -0.167         \\
                &  (0.224)         &  (0.230)         &  (0.112)         &  (0.114)         \\
\addlinespace
Above median corruption&   -0.330         &   -0.442\sym{*}  &   -0.058         &   -0.093         \\
                &  (0.220)         &  (0.263)         &  (0.107)         &  (0.099)         \\
\addlinespace
Before $\times$ Above median corruption&    0.421         &    0.380         &    0.345         &    0.191         \\
                &  (0.280)         &  (0.289)         &  (0.233)         &  (0.146)         \\
\midrule
Observations    &      831         &      831         &      831         &      831         \\
Dep. Var. Mean  &    1.032         &    0.912         &    0.563         &    0.364         \\
Adjusted R$^2$  &    0.115         &    0.072         &    0.034         &    0.067         \\
$\beta_0+\beta_2 \, c_{ist}$&    0.320         &    0.072         &    0.218         &    0.024         \\
p-value         &    0.097         &    0.615         &    0.256         &    0.815         \\
\bottomrule
\end{tabular}}
%
